Dyad dye.



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incense. j I. r aifice imo LcttersEe -Q Patented Pentathlon lease calpel-1, e. -seria no. ss,a1 5.'

To all'whom z't may concern:

Be it known-that I, An'rnon W; -l rsrnun, a citizen oi the United'States,residing at lultneyville,.in the. county of; Wayne and State of New York, have invented a new and useful dyad dye especially adapted for dyeing textile material a delicate blue and to serve as an admixtureof dyes'tufi's o'r'of color-test compounds, of which the following isaspecificat'ion. My dyad dye consists of the following two ingredients, combined in the proportion stated; viz.

Grystal violet 1 part. Malachite green 17 parts.

These two chemicals are basic colors derivative of triphenylniethane. Malachite green is a diamid and crystal violet a triamid derivative of triphenylmethane. Each of these two chemicals, malachite green inf particular is manufactured in several grades and therefore varies considerably in its combining power. Theabove proportion is for the particular one of the commercial grades I. am using at the present.

The dyeing betia ln compounding the dyad dye I dissolve the malachite green and the crystal .violet separately in clear water. Of the crystal violet I make a one-tenth per cent. solution, and of the malachite green ll make a solution of such a strength as that when the two solutions are taken in equal amounts will produce the full combining power of the two chemicals. With the particular grade of malachite green I am now using that strength is one and seven-tenths per cent. solution, as the proportion is 1; 17. After determining the amount of the thus prepared fluids to be used in any given case, I take equal parts of the two solutions and mix them together, allow them to stand for about one hour, then gently heat them to complete the eaction and add them to the water for the dye bath. The quantity of fluid in the dyeing batho. (2., water and solutionsshould not exceed one hundred and fifty gallons for one hundred pounds of "-xtile material to be dyed. As the depth of the color depends on the amount of dye used, less wateris to be used when a deeper shade of blue as desired. When the material is ready for the dye the dye bath isr'warmed to about thirty or thirty-five degrees-centigrade the material is well saturated. j The time re- I quired'forfthe'material to suck up the fluid is'usually' less than forty five minutes. .The"

materialisnext wrung out, rinsed insew .eral clear'waters, and dried; I

For dyeing s1lk,'soap to three to six'ounces 'for each'ten gallons of dye fluid is added to'the dye bath described.

. the amount of After dyeing the material isbrightened- .in

an acetic acid bath,"composed of one pint acetic acid and ten gallons of water.

For dyeing wool, the material is either first treated in a Weak acid bath, such as hydrochloric or acetic, or a small quantity of the acid is added to the dye bath.

Cotton must first be mordanted before being treated in the dye bath. One of the ways of accomplishing this is to put the cotton in a boiling tannic acid bath. and allow the bath to cool vdown before the cotton is removed therefrom. For pale shades one per cent. of tannic acid may be used, for deeper shades threeto four per cent. may be used. After the tannic bath the material is iminersed in the fixing bath. The latter is a solution of tartar emetic the amount of which is to be varied according to' the shade desired and usually varies from one-fourth to four per cent.

The dyad dye imparts to the materials thus treated an exquisite shade of blue. To obtain a difierent shade or hue, the materials treated as described are dyed again by the process technically termed topping; that is to say, they are treated with another dye which deepens or modifies the color obtained fro the first dyeing. The delicate blue imparted to the material by my dyad dye maybe converted into a greenish blue by topping the previously dyed material with unmixed malachite green, using from ten to twenty-five per cent. as much as was used in the dyeing bath. The precise amount will vary with the grade of greenness desired. Topping may also be efi'ected with unmixed crystal violet, using from five to twenty per cent. of the amount used in the dyeing bath when a deeper blue is desired.

The dyad dye described is available for use as an admixture of dyestuffs when a basic blue is desired to deepen or vary the previous color of the material. One hundred pounds of textile material dyed ina bath composed of 1% pounds diamino azo blue R,

55 and kept at about that temperature until 1 pound sodium ifil' nate and 20 pounds Mai-a d p the'dyaddye escribd above' dyed line shade of blue.

The adaptability of the'd'yad dye described as an admixture of color-test compounds is illustrated in my pending application, Serial No. 865,012 in hich it \EWQS first disclosed to theOfiice.-- i v To save the user of the dyad dye des rib d the time and trouble of weighing or other wise proportioning the-crystal v-iolet and the malachite green, and the time and trouble of dissolving them separately; I prefer to mix the said'ingredients in the proportion stated and evaporatethenmixture down to dryness on a water bath, The, productthus obtained maythen be marketed in cake or'fiake form ready for use as a dye or as admixture as "1 f i i; =2}

Having ('lescribed my" invention, 'I 'claim 1'. A'dyad dye consisting of crystal violet and malachite green substantially as described.

2; The herein described dye and admixture of dyestuffs consisting of one part of crystal violet and seventeen pa r't's of malachite green substantially as described.

In testimony whereof I havdsignd my name to this specification in thepresence of 30 tw s b r g. Wi nw SMam ZZ 6;-

" a 'ART 3' I HER-Q1 .f l/Vitnesseszrilg if 'v HARRY FIS E ,7 HOWARD E. Comm 1 copies oft insistent: ns y h e obtained for fine cents each, by dii dre ssi ngg the "semifinals at Eete nt; "WsishingtomDQOP i 

